Spinning box



Sept. 14, 1943. R. E. WEAVER SPINNING BOX Filed March 18. 1942 3Sheets-Sheet 1 'INVENTOR. BY RHLFH E. WEHVEF ATTORN Sept. 14, 1943. R 5w v i-q V 2,329,499

1 SPINNING BOX Filed March 18, 1942 5 Sheets-Sheet 2- INVENTOR. FHLPH EWEHVEF Sept. 14, 1943. R. E. WEAVER 2,

SPINNING BOX Filed March 18, 1942 3 Sheets-Sheet 3 A INVENTOR. FHLPH EWEF'VEF Patented Sept. 14, 1943 UNlTED STATES PATENT OFFICE 2.329.499" wv p Y Ralph E. Weaver, Lewl'stown,

Viscose Corporation,

American Pa., assignor to Wilmington,

Del., a corporation of Delaware Application March 18, 1942, Serial No.435,145

7 Claims.

This invention relates to improvements in spinning boxes such as used inthe manufacture of rayon and'the' like. More particularly, thisinvention relates to improvements in means for coupling a spinning boxto a drive shaft or spindle.

In the manufacture of rayon and the like the thread or yarn is collectedin a spinning box that is rotated at 'high'speed by a drive shaft ormotor spindle. It is the Customary practice to remove spinning boxesfrom their drive spindles, also to replace them, while the drivespindles are rotating at high speed. It is therefore necessary that thespinning boxes be readily removable from the drive spindles. It is alsonecessary that the spinning box have only a minimum amount of slipon itsdrive spindle during the spinning operation.

This invention has for its principal object to provide improvements inmeans for coupling a spinning box to a drive spindle which will permitthe spinning box to be readily removed from the drive spindle and alsoto be readily replaced thereon.

Another object of the'invention is to p o improvements in means forcoupling a spinning box to a drive spindle which will permit thespinning box to be placed on the drive spindle while the spindle. isrotating at high speed without subjecting the spindle motor to excessivestrain.

V Figure 6 is a sectional view taken on the line 6 -6 in Figure 5.

form of the invention taken on theline 'I-'I in Figure 8.

Figure 8 is a sectional view taken on the line 88 in Figure 7.

' A further object of the invention is to provide improvements in meansfor positively coupling a spinning box to a drive'spindle which willpermit the spinning box to be placed on a drive spindle rotating at highspeed without subjecting the spindle motor to excessive strain. Otherobjects and advantages of the invention will-be apparent from thefollowing description and the accompanying drawings.

In the drawings,

Figure 1 is a sectional view with parts broken away of a spinning boxembodying the invention, taken on the line l--l in Fig. 2.

FigureZ is a sectional view taken on the line 2-2 in Figure-l.

Figure 3 is a sectional view of a spinning box with parts broken away,embodying another form 4 of the invention taken on the line 3-3 inFigure 4.

Figure 4 is a sectional view-taken on the line 4--4 in Figure 3.

Figure 5 is a plan- View of the spindle bushing shown in Figure 3.

Figure 9 is an elevational view of the spindle bushing and annularbushing engaging means shown in Figures 7 and 8.

Referring to Figures 1 and 2 of the drawings.

reference character I indicates generally a spinning box having a hubportion 2 provided with a central bore3. The spinning box, when in 0D-erative position,'is mounted on the bushing 4 which is rigidly attachedto a motor spindle not shown. While the bushing closely fits the centralbore, suflicient clearance is provided to enable the spinning box to bereadily removed and replaced on the bushing. Means for'coupling thespinning box to; the bushing comprising the annular, member 5 pressedinto an annular recess surrounding the central bore are fixed to the hubportion. Engaging members 6 are pivotally mounted in the annular memberand have end portions 1 which are adapted'to engage the bushing andweighted end portions 8 of greater mass which are adaptedto be extendedoutwardly by centrifugal force. The hub portion is recessed at l0 and IIto accommodate the end portions 8. Thebushing is provided with axiallyextending slots or grooves 9 which receive the end portions 1 when theweighted end portions 8 are extended outwardly by centrifugal force. Theslots are generally arranged in pairs diametrically opposite each other,but may be arranged as shown in Figure 2 with the slots in staggeredrelation. With the latter arrangement. the annular member need rotateonlya small amount relative to the bushing before the end portion of oneof the engaging members may enter a slot thereby coupling the spinningbox to the bushing which is fixed to adrive means.

In the operation of this embodiment of the invention the spinning box isplaced on the bush i'ngwhich is rotating at high speed. Due to theinertia of the spinning box, a certain amount of slippage takes placebetween the box and the bushing at first and thebox gradually assumesthe speed of the bushing. After the box has reached a sufficient speed,the centrifugal force acting on the engaging members extends theweighted ends outwardly causing. the other ends to extend inwardly intoat least one of the slots in the bushing and into engagement with one ofthe walls thereof and thereby positively coupling the spinning box tothe bushing.

Reierring to Figures 3 to 6 of the drawings in which another embodimentof the invention is shown, reference character 2| indicates generally aspinning box having a hub portion 22 provided with a central bore 23.The spinning-box when in operative position, is mounted on the bushing24 which is rigidly attached to a motor spindle not shown. While thebushing closely fits the central bore, sufficient clearance is providedto enable the spinning box to be readily removed and replaced on thebushing. Means for coupling the spinning box to the bushingcomprismembers 26 are slidably mounted in the annular member and areadapted to enter the recesses" 27 in the bushing 24. A portion of thebushing adjacent one side of each of the recesses is bev eled as shownby reference character 23 to permit the engaging members to. read tenter-the re- I cesses and engage the walls thereof. Means are providedfor actuating the engagingmcinber'scomprising members 29 pivotallysupported be-' tween their ends on the pins 33 in the annular member 25passing through the elongated openings or slots 34 in the actuatingmembers which permit the actuating members to slide as well as pivot onthe pins 33. The actuating members elongated openings or slots 52 in theactuating members which permit the actuating members to slide as Well aspivot on the pins The actuating members are pivotally connected at 50 tothe slidable pin members 45 and theirec ends 43 are weighted or ofgreater mass and are adapted to be extended outwardly by centrifugalforce. The hub portion of the spinning box is recessed at 53 toaccommodate the weighted ends 48 of a the actuating members. I

In the operation of this form of the invention the spinning box isplaced on the bushing while it is rotating at high speed and thespinning box gradually assumes the speed of the bushing. After the boxhas re'ach'ed sufficient speed the weighted ends .of -the r actuating 5jrnembers are extended outwardl'y'by centrifugal force causin them toraise and pivotabou t their pivotal sup- "vpo'rt'atthe same time theother ends are lowered moving the bushing engaging members downthespinning boxto the bushing.

1 While preferred embodiments of the invention have been shown. it is tobe understood that changes andvariations may be made without What Iclaim is: 1. A spinning box comprising a hub portion having a centralbore, means for positively couare pivotally connected at one end tothem:

gaging members and the free ends 3i are weighted or are of greater massand are adapted to be ex-. tended outwardly by centrifugal force. Thehub portion of the spinning box is recessed at 32 to accommodate theweighted ends 3| of the actu-y1 ating members.

In the operation of this form of the invention the spinning box isplaced on the bushing which ered moving the engaging members intorecesses in the bushing and thereby the spinning box to the bushing.

Referring to Figures '7 to 9 of the drawings in which a furtherembodiment fof the invention is. shown, reference character 40 indicatesgenerally a spinning box having a hub portion H -provided with a centralbore 42, The spinning box, when positively coupling pling the spinningbox to a drivemember comprising a member carried by the hub portionpivotallymounted betweenits ends, one end of which is arranged to beactuated by centrifugal force to move the other end into engagement withthe drive memben,

2. A spinning box comprising a hub portion having a central bore,imeansfor positively coupling the spinning box to a drive member comprisingan' annular member carried by the hub pling the spinning box to a drivemember comprising means slidably mounted in the hub portion and meansactuated by centrifgual force to move theslidable means into engagementwith in operative position, is mounted org-the bushing 43 which isrigidly attached toa motor spindle not shown. While the bushingcloselyfits' the central bore, sui'hcient clearance i'sf'provided toenable the spinning box to be readily removed 1 and replaced on thebushing. Meansfor coupling the spinning box to the bushing comprisingthe annular member 44 pressed into an annular I recess surrounding thecentral bore is fixed t0 the hub portion. are slidably mounted in theannular member and carry the annular bushing engaging'meansdfij Thebushing engaging means" and the bushing are provided with tooth-shapedportions SI and A plurality of pin members 45 l f the drive member.

4. A spinning box comprising a hub portion having a central bore, meansfor positively coupling the spinning box to a drive member comprising aplurality of means slidably mounted in the hub portion .and a pluralityof means actuated. by centrifugal force to move the slidable meansintoengagernent with the drive. member.

' 5.-A spinning boxflcomprisinga h'ub portion having a central'b'ore,means'forpos'itivelycoupling the spinning box to a drivemembercomprising an annular member carried by the hub portionsurrounding the central bore, means slidabl v mounted in the annularmember and means pivotally mounted in the annular 'member adapted to beactuated by centrifugal force to move the slidable means into engagementwith the drive member.

6. A spinning box comprising a hub portion having a central bore, meansfor positively coupling the spinning box to a. drive member comprisingan annular member carried by the hub portion surrounding the centralbore, a plurality or means slidably mounted in the annular member and aplurality of means pivotally mounted in the annular, member adapted tobe actuated by centrifugal Iorce to move the slidable means intoengagement with the drive member. 7 a V 7. A spinning box comprising ahub portion having a central bore, means for positively coupling thespinning box to a drive member comi0

